Home
HelpTest Code LAB12638 Metanephrines, Urine - Random
Department
SEND OUTS
Reference Lab Test Number
UMETR
Collection Requirements
Collect random urine.
Refer To
Primary Collection Container
Sterile Cup
Alternate Collection Container
Sterile Container
Transport
Urine refrigerated
Preferred Transport Temperature
Refrigerated
Processing
Add 1-2 drops 6N HCl to a 10 mL urine aliquot within 4 hours on collection. Mix well, ensure pH is between 1-3, and send in a screw-capped plastic urine container.
Stability
With preservative:
Ambient: 9 days
Refrigerated: 9 days
Frozen: 30 days
Minimum Testing Volume
5.0 mL
Reference Range
By report
Methodology
High Performance Liquid Chromatography
Performed
Monday-Friday
Reported
6 days
CPT Codes
-83835, 82570
Unacceptable Conditions
Samples with pH <1.
Additional Information
Note: Medications that may interfere with metanephrine include amphetamines and amphetamine-like compounds, appetite suppressants, bromocriptine, buspirone, caffeine, carbidopa-levopa (Sinemet), clonidine, dexamethasone, diuretics (in doses sufficient to deplete sodium), methyldopa (aldomet), MAO inhibitors, nose drops, propafenone (Rythmol), tricyclic antidepressants, and vasodilators.